SAE J2842:2019 pdf free

SAE J2842:2019 pdf free.R-1234yf and R744 Design Criteria and Certification for OEM Mobile Air Conditioning Evaporator and Service Replacements
The evaporator in this standard is defined as a component (the evaporator core body and permanently attached lines and fittings) installed in the heating, ventilation, and air conditioning (HVAC) module intended for climate control of the passenger compartment of a vehicle. The evaporator assembly in this standard is defined as a component assembly (with removable attaching lines, fttings, or devices) installed in the heating, ventilation, and air conditioning (HVAC) module intended for climate control of the passenger compartment of a vehicle. The evaporator or the evaporator assembly shall be treated as the component specified in this standard according to each section.
Substandard evaporator design, damage, or misuse during assembly, shipping, or service may increase potential risks to vehicle occupants. The requirements specified in this standard contain an approach for design, assembly to the HVAC housing, production quality, and production testing of the assembly. Other relevant manufacturing and transportation practices such as storage, packaging, and shipping shall be documented and retained by the manufacturer.
Evaporators shall be designed appropriately for all vehicle operational conditions (AC on or off), as well as vehicle off (storage and soak), as would be expected over the lifetime of a vehicle. The evaporator shall have appropriate corrosion behavior and protection to meet this specification or the equivalent, based on evaporator field return data.
Evaporators as assembled in an HVAC module must include consideration of forces and torques from the assembly and disassembly of attaching lines and components. Any attaching tubing/pipe or other components in the evaporator assembly must withstand anticipated production, transport, and assembly forces on those components without degradation of the refrigerant retention characteristics from those specified in this standard.
The design specifications of the evaporator shall include considerations for changes in material properties due to agingbased upon assembly, shipping, expected usage, exposure to corrosion, and storage to achieve evaporator life targets.If the evaporator or evaporator assembly, including mating or attaching parts, are assembled from different materials, then galvanic corrosion must be considered in the validation/certification process.SAE J2842 pdf free download.